Warp twisting-in machine



1. H.' BECKER. WARP TWISTING-IN MACHINE. APPLICATION FILED Nov. 24, 1920;

Patented Aug. L 1922.

JOHN I-l. BECKER, OF BROOKLYN, NEW YORK, ASSG'NOR T0 WARE TWISTING-EN MACHINE COMEANY, O1? BROOILYN, NEW' YORK, A COREOR-ATION 0F NEW YORK.

Application filed November 24,-, 1926.

To @ZZ fro/wm t may concern:

Be it known that 1, JOHN H. BECKER, a citizen olf the United States, residing at Brooklyn, in the county ot' Kings and State oit New York, have invented certain new and usetul Improvements in. lVarp Twisting-1n Machines, of which the following is a specilication.

My invention relates to twisting means and especially to twisting means for use in warp twisting-in machines of the class (see, 'for example, U. t5. Patents Nos. 648,738; trasse; esami; esatte, 810,711, enses and 911,886) in which the threads to be joined are held with their end portions projecting in the same direction and each in angular relation to its body portion and in which the twisting means consists o1" two coacting members atl'ording pad or equivalent twisting elements and one ot which is movable in contact with the other so as iii-st to twist the two end portions together and then twist said end portions about one ot the body portions.

My invention consists Vin a novel construction of the twisting members whereby better twisting is accomplished as will be hereinaiter pointed out.

1n the accompanying drawing,

Figure 1 is a sectional view taken on the line 1 1 ot Figure 2;

Figure 2 is a plan view ot twisting and associated mechanisms sul'istantially like those found in the Patent No. 810,711, Afor example, above referred to;

Figure 3 is an inside or rear itace view of the fixed twisting member, with its pad reinoved; and

l"igure 11 is a :fragmentary plan. oit said member, partly in section.

A. A are the body portions oit two threads, one from the old warp and one 'from the new warp to be joined, and B B are the extremities of the threads, the threads being held in substantially the relation shown by the thread-holding portions a a of a suitable 'fork (see forli 59 in Patent No. 810,711, Jfor example) and by a clamp o gripping the upturned extremities B B and by the beams c, shown diagrammatically. (Z denotes a tori; which keeps the extremities B B in proper position until the twisting of said extremities is well under way, and e designates a suitably operated knife for there- Speciicaton of Letters Patent.

VJARB TVVSTNG-INI MACHINE.

Patented Aug. 1, 1922,

Serial No. 4263124.

upon severing thel extremities (see also Patent No. 810,711).

The pads or twisting elements proper, one rotary and the other fixed, are designated j and g. They are formed substantially the same as in the aforementioned (Landfear) itatent No.` 911,886, as herein illustrated by way oi' example: that is, one (the movable one, g) is tapered toward itsforward end and has a plain acting tace, while the other (or fined one, f) has in the lower portion ot its acting tace a substantially triangularrecess terminating at its lower right-hand corner in a notch f2, the acting tace ol the pad being continued intact both sides of the recess, as at f3, f4. My invention is not limited to the particular form of the pads or equivalent elements, although it has been especially designedvfor use with pads such as l have outlined above and which, as will be seen, on reference to the said Landfear patent, cause the twisting to proceed :trom the severed extremities ot the upturned end portions B B, in twistingsaid end portions together, and then from the point of juncture between' the twisted end portions and the body portions of the threads, in twisting said end portions and the body portion ot one thread together.

(lne purpose my invention particularly aims to accomplish isfto prevent abortive eiiorts on the part ofthe twisting vmeans to effect the twisting: certain libres-are prone to slip rather than to roll between;theftwist-` ing` means as theyhave heretofore been con-` structed, and on account of this the production oit a twist and the consequent'uniting ot the threads would occasionally not/occur. .Another purpose is to insure the twisting together o1 the extremities clear to their tree ends and in the finished twist prevent the Yformation oi a projecting end or tail The pads v7 g are as usual composed of some yielding material, such as rubber, and have attaching buttons 71,.

The pad f is attached to a carrier device s' (by having its buttons interloclred with suitable notches z", therein) which is fixed to some stationary part, as a shaft j; the carrier c' may have secured to it the forli d. The pad g is attached to a carrier device 7c (by also having its buttons interlocked with suitable notches la therein) which is fixed to a shaft Z arranged to rotate parful allel with shaft The pads arey curved around the aXis of a shaft Z and the thread holding portions a a project within the inner i perimeter ofthe pad f, being accommodated by a hole m 1n carrier i.

Pad g is in the present instance held substantially immovably on and against the Hat outer face of the carrier 7c. .But pad f is capable of a certain slight movement toward its carier z', represented by a crevice a appearing in Figure 2. In order to accom? plish the purposes indicated I have arranged the pad to have a rocking bearing on a :tulcrum which opposes at the bearing of the pad thereon greater resistance to displace-- ment of the pad from the complementary twisting member than is opposed elsewhere in the area of the pad; the exact position of this means in the present adaptation of my invention will be pointed out hereinafter. Said means consists in the example herein shown, which represents its preferred form,

of a ball 0 protruding from that face of the carrier device z' which is opposed by pad f and being backed by a spring y) housed in the carrier device; the ball and spring may be contained in a ferrule g Vwhich Vhas its outer edge peened inward to limit the out ward movement of the ball. With reference to the pad when properly positioned, the ball is in a radius that is located between the position of the upstanding extremities B B before severing and the thread A around which the severed and twisted extremities are to be twisted, and it lies in said radius nearer the outer perimeter of pad f than the inner one. The ad j is therefore capable of rocking on a tu crum, see-saw fashion, the tulcrum being moreover a yielding one.

Vhe in twisting two threads together pad g moves around against pad f to effect the rolling and consequent twisting together of the extremities B B between it and` pad f, the pressure of said extremities gradually increases as they are rolled around toward (and until they reach) the radial line of ball 0. This gradual increase oi. pressure, due to pad f being held against displacement from pad g more in the radial line of ball o than elsewhere in the area of the pad f, is very helpful in preventing slipping of the threads and their consequentpartial or total failure to intertwist; and the pressure being greatest, as between-the outer and inner perimeters of the pads, at their outer perimeters, the twisting together of the extremities clear to their very tips is uniformly insured, and this prevents the formation on the finished twist itormed'inthe threads of a so-called tail or loose projecting end.

After the intertwisted ends pass the ball o the pressure on the threads decreases, and this is quite desirable, for thereupon the intertwisted extremities B B are to be twisted with the body portion of' the righthand thread and the consequent increased bullrof the material, in order to make a good twist, requires increased spacing oi:l the pads.

'I do not wish to be limited to the exact construction herein shown and described what I claim being:

l. A thread twisting means including twisting members one et which is'movable against and in wiping contact with the other, one of said members including a supporting device and a rocking pad carried by said device andy affording the working face et said member and having a bearing, said device having a tulcrunrfor said bearing opposing greater resistance at said bearing to displacement of the pad from the other member than is opposed to such displacement elsewhere in the area of the pad.

2. A thread twisting means including twisting members one of which is movable against `and in wiping `contact with the other, one of said members including a supportingdevice and a rocking pad carried by said device and affording the working tace of said member and having a bearing, said device having a yielding fulcrum for said bearing' opposing greater resistance at said bearing to displacement oi the pad trom the other member than is opposed to ysuch disn placement elsewhere inthe area of the pad.

In testimony whereo't` I atiiX my signature.

JOHN H. BECKER. 

